US20160252133A1 - Radial telescope bushing for steering column - Google Patents
Radial telescope bushing for steering column Download PDFInfo
- Publication number
- US20160252133A1 US20160252133A1 US14/633,714 US201514633714A US2016252133A1 US 20160252133 A1 US20160252133 A1 US 20160252133A1 US 201514633714 A US201514633714 A US 201514633714A US 2016252133 A1 US2016252133 A1 US 2016252133A1
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- United States
- Prior art keywords
- telescope
- jacket
- bushing
- assembly
- steering column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000036316 preload Effects 0.000 claims abstract description 9
- 238000003780 insertion Methods 0.000 claims abstract description 7
- 230000037431 insertion Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/02—Sliding-contact bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/181—Steering columns yieldable or adjustable, e.g. tiltable with power actuated adjustment, e.g. with position memory
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/185—Steering columns yieldable or adjustable, e.g. tiltable adjustable by axial displacement, e.g. telescopically
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/001—Bearings for parts moving only linearly adjustable for alignment or positioning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/12—Arrangements for adjusting play
- F16C29/123—Arrangements for adjusting play using elastic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C43/00—Assembling bearings
- F16C43/02—Assembling sliding-contact bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/20—Land vehicles
- F16C2326/24—Steering systems, e.g. steering rods or columns
Definitions
- the following description relates to steering columns for motor vehicles and, more specifically, to a telescope bushing assembly for a steering column.
- Some known steering columns for motor vehicles are provided with mechanisms for adjusting the steering column position by an operator of the motor vehicle.
- Available adjustments typically include a telescoping adjustment in which the steering column is extended toward the operator or retracted away from the operator, and a tilt or rake adjustment in which an angular position of the steering column is changed relative to the operator.
- a telescope bushing is used to provide a compliant bushing material to facilitate telescope action.
- the telescope bushing is constricted around a telescoping member by way of injected material and pressurized into a cavity between the telescope bushing and a fixed jacket component. Upon solidification, the injected material de-lashes the telescope joint.
- the injection process and resulting telescope bushing may be greatly influenced by environmental variables, which may result in poor wear characteristics.
- a bushing assembly for a steering column having a fixed jacket and a telescope jacket is provided.
- the bushing assembly includes a set screw configured for insertion into the fixed jacket, and a radial telescope bushing co-acting with the set screw and having a post and a curved bushing portion configured to pre-load the radial telescope bushing against the telescope jacket to provide a lash-free interface between the fixed jacket and the telescope jacket.
- a steering column assembly in another exemplary embodiment of the present invention, includes a steering column shaft, a fixed jacket having a jacket aperture formed therein, a telescope jacket configured for telescopic movement relative to the fixed jacket, and a bushing assembly.
- the bushing assembly includes a set screw disposed in the jacket aperture, and a radial telescope bushing co-acting with the set screw and having a post and a curved bushing portion configured to pre-load the radial telescope bushing against the telescope jacket to provide a lash-free interface between the fixed jacket and the telescope jacket.
- a method of fabricating a bushing assembly for a steering column having a fixed jacket and a telescope jacket includes providing a set screw configured for insertion into the fixed jacket, and forming a radial telescope bushing having a post extending within the set screw and a curved bushing portion configured to pre-load the radial telescope bushing against the telescope jacket to provide a lash-free interface between the fixed jacket and the telescope jacket.
- FIG. 1 is a perspective view of an exemplary steering column assembly
- FIG. 2 is an enlarged view of section 2 shown in FIG. 1 , partially in exploded view, before assembly of the invention
- FIG. 3 is a perspective view of an exemplary radial telescope bushing shown in FIGS. 1 and 2 ;
- FIG. 4 is a side view of the radial telescope bushing assembly shown in FIGS. 1 and 2 .
- FIG. 1 illustrates an exemplary steering column assembly 10 for a vehicle (not shown).
- steering column assembly 10 generally includes a steering column shaft 12 , a jacket assembly 14 positioned about shaft 12 , a mounting bracket 16 , and a telescope actuator assembly 18 .
- Steering shaft 12 extends along an axis ‘A’, and a steering wheel (not shown) is attached to a first end 20 of shaft 12 while an opposite second end (not shown) of shaft 12 is coupled to a steering gear (not shown).
- Jacket assembly 14 surrounds and supports shaft 12 and includes an upper jacket 24 and a lower jacket 26 .
- Mounting bracket 16 supports jacket assembly 14 and mounts assembly 14 to the vehicle.
- telescope actuator assembly 18 includes an electric motor 30 and gearing (not shown) for transferring rotatory motion of electric motor 30 to move steering shaft 12 in the telescope direction. More specifically, a drive bracket 32 transmits linear motion from motor 30 via a leadscrew 34 to upper jacket 24 during telescopic adjustment of steering column assembly 10 . When telescopic movement is commanded, actuator assembly 20 is operated to vary a telescopic relationship between upper jacket 24 and lower jacket 26 . In another embodiment (not shown), the telescope actuator assembly may be manually adjusted.
- a telescope bushing assembly 40 is configured for insertion into a threaded aperture 28 formed in lower jacket 26 to provide a de-lashing force between telescoping upper jacket 24 and fixed lower jacket 26 .
- Telescope bushing assembly 40 generally includes a set screw 42 and a radial telescope bushing 44 .
- set screw 42 is generally cylindrical and includes a body 46 having a threaded outer surface 48 and an aperture 50 .
- Threaded outer surface 48 is configured to meshingly engage threaded aperture 28 such that set screw 42 may be selectively screwed into and out of threaded aperture 28 .
- Aperture 50 is configured to receive one or more tools (not shown) to facilitate insertion and removal of set screw within threaded aperture 28 .
- radial telescope bushing 44 generally includes a post 52 and a curved free-state bushing portion 54 extending about post 52 .
- free-state bushing portion 54 is elastically deformable in a radial direction extending from post 52 .
- post 52 and curved bushing portion 54 are formed integrally as a single component.
- Post 52 is inserted into set screw aperture 50 to maintain radial positioning relative to set screw 42 and lower jacket 26 .
- Curved bushing portion 54 provides a biasing effect against upper jacket 24 as it is driven against the curved upper jacket 24 by set screw 42 .
- free-state bushing portion 54 appears as a hat brim shape about post 52 .
- curved bushing portion 54 is in the form of an arc between opposite outboard edges 56 of radial telescope bushing 44 .
- Curved bushing portion 54 has a free-state radius of curvature that is generally less than a radius of curvature of telescoping upper jacket 24 . This creates a free-state region of contact that is located at the opposite outboard edges 56 of radial telescope bushing 44 .
- radial telescope bushing 44 is elastically forced to generally conform to outer surface 60 of upper jacket 24 , which provides a spring loaded pre-load to upper jacket 24 about outboard edges 56 that de-lashes the interface between jackets 24 , 26 .
- the telescope bushing assembly 40 will have clearance between bushing portion 54 and upper jacket 24 .
- radial telescope bushing 44 is disposed radially outward of upper jacket 24 and radially inward of lower jacket 26 .
- Radial telescope bushing 44 may be included with various coatings to provide desired wear and lubricity characteristics. Further, material thickness, diameter, post size, and other features of radial telescope bushing 44 may be tuned to vary the bushing's effective spring rate such that bushing 44 may be used an a multitude of applications.
- assembly 10 may include two sets of telescope bushing assemblies 40 to bias the telescoping jacket 24 against the inner diameter of fixed jacket 26 .
- This enables the radial points of de-lashing contact to be equally space, resulting in the assembly being insensitive to component variation and enabling assembly 10 to be disassembled and reassembled while still yielding the same performance.
- the geometry of busing 44 is self-stabilizing during assembly, resulting in radial self-alignment during torque procedure.
- bushing assembly 40 provides a geometry that, when loaded against mating components, acts like a spring. This spring effect serves as a means to compensate for wear of telescoping interfaces to maintain a de-lashed joint.
- bushing assembly 40 provides a wear surface for telescoping jacket 24 to ride against during telescope function, provides a surface and positioning geometry for set screw 42 to interface that complements and facilitates the spring effect, and provides a self-stabilizing geometry that rotationally orients components relative to the axis of telescope movement during assembly.
- the systems include a telescope bushing assembly having a set screw and a radial telescope bushing.
- the radial telescope bushing includes a curved surface that provides a pre-load against a telescoping jacket of the system.
- stroke load can be monitored in concert with the fastening process to provide feedback, and the bushing assembly provides improved and repeatable performance in static stiffness and natural frequency due to guaranteed points of contact between the bushing and the telescope jacket.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Steering Controls (AREA)
Abstract
A bushing assembly for a steering column having a fixed jacket and a telescope jacket is provided having a set screw configured for insertion into the fixed jacket, and a radial telescope bushing co-acting with the set screw and having a post and a curved bushing portion configured to pre-load the radial telescope bushing against the telescope jacket to provide a lash-free interface between the fixed jacket and the telescope jacket.
Description
- The following description relates to steering columns for motor vehicles and, more specifically, to a telescope bushing assembly for a steering column.
- Some known steering columns for motor vehicles are provided with mechanisms for adjusting the steering column position by an operator of the motor vehicle. Available adjustments typically include a telescoping adjustment in which the steering column is extended toward the operator or retracted away from the operator, and a tilt or rake adjustment in which an angular position of the steering column is changed relative to the operator.
- In some known systems, a telescope bushing is used to provide a compliant bushing material to facilitate telescope action. In order to provide for a lash-free telescope joint, the telescope bushing is constricted around a telescoping member by way of injected material and pressurized into a cavity between the telescope bushing and a fixed jacket component. Upon solidification, the injected material de-lashes the telescope joint. However, the injection process and resulting telescope bushing may be greatly influenced by environmental variables, which may result in poor wear characteristics.
- Accordingly, it is desirable to provide a telescope bushing that minimizes components, increases ease of assembly, and de-lashes a telescope interface while providing a wear-compensating surface.
- In one exemplary embodiment of the present invention, a bushing assembly for a steering column having a fixed jacket and a telescope jacket is provided.
- The bushing assembly includes a set screw configured for insertion into the fixed jacket, and a radial telescope bushing co-acting with the set screw and having a post and a curved bushing portion configured to pre-load the radial telescope bushing against the telescope jacket to provide a lash-free interface between the fixed jacket and the telescope jacket.
- In another exemplary embodiment of the present invention, a steering column assembly is provided. The steering column assembly includes a steering column shaft, a fixed jacket having a jacket aperture formed therein, a telescope jacket configured for telescopic movement relative to the fixed jacket, and a bushing assembly. The bushing assembly includes a set screw disposed in the jacket aperture, and a radial telescope bushing co-acting with the set screw and having a post and a curved bushing portion configured to pre-load the radial telescope bushing against the telescope jacket to provide a lash-free interface between the fixed jacket and the telescope jacket.
- In yet another exemplary embodiment of the present invention, a method of fabricating a bushing assembly for a steering column having a fixed jacket and a telescope jacket is provided. The method includes providing a set screw configured for insertion into the fixed jacket, and forming a radial telescope bushing having a post extending within the set screw and a curved bushing portion configured to pre-load the radial telescope bushing against the telescope jacket to provide a lash-free interface between the fixed jacket and the telescope jacket.
- These and other advantages and features will become more apparent from the following description taken in conjunction with the drawings.
- The subject matter which is regarded as the invention is particularly pointed out and distinctly claimed in the claims at the conclusion of the specification. The foregoing and other features, and advantages of the invention are apparent from the following detailed description taken in conjunction with the accompanying drawings in which:
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FIG. 1 is a perspective view of an exemplary steering column assembly; -
FIG. 2 is an enlarged view of section 2 shown inFIG. 1 , partially in exploded view, before assembly of the invention; -
FIG. 3 is a perspective view of an exemplary radial telescope bushing shown inFIGS. 1 and 2 ; and -
FIG. 4 is a side view of the radial telescope bushing assembly shown inFIGS. 1 and 2 . - Referring now to the Figures, where the invention will be described with reference to specific embodiments, without limiting same,
FIG. 1 illustrates an exemplarysteering column assembly 10 for a vehicle (not shown). As shown inFIG. 1 ,steering column assembly 10 generally includes asteering column shaft 12, ajacket assembly 14 positioned aboutshaft 12, amounting bracket 16, and atelescope actuator assembly 18. -
Steering shaft 12 extends along an axis ‘A’, and a steering wheel (not shown) is attached to afirst end 20 ofshaft 12 while an opposite second end (not shown) ofshaft 12 is coupled to a steering gear (not shown).Jacket assembly 14 surrounds and supportsshaft 12 and includes anupper jacket 24 and alower jacket 26.Mounting bracket 16 supportsjacket assembly 14 and mountsassembly 14 to the vehicle. - In the embodiment shown,
telescope actuator assembly 18 includes anelectric motor 30 and gearing (not shown) for transferring rotatory motion ofelectric motor 30 to movesteering shaft 12 in the telescope direction. More specifically, adrive bracket 32 transmits linear motion frommotor 30 via aleadscrew 34 toupper jacket 24 during telescopic adjustment ofsteering column assembly 10. When telescopic movement is commanded,actuator assembly 20 is operated to vary a telescopic relationship betweenupper jacket 24 andlower jacket 26. In another embodiment (not shown), the telescope actuator assembly may be manually adjusted. - As illustrated in
FIG. 2 , atelescope bushing assembly 40 is configured for insertion into a threadedaperture 28 formed inlower jacket 26 to provide a de-lashing force between telescopingupper jacket 24 and fixedlower jacket 26.Telescope bushing assembly 40 generally includes aset screw 42 and a radial telescope bushing 44. - With additional reference to
FIG. 4 , setscrew 42 is generally cylindrical and includes abody 46 having a threadedouter surface 48 and anaperture 50. Threadedouter surface 48 is configured to meshingly engage threadedaperture 28 such that setscrew 42 may be selectively screwed into and out of threadedaperture 28.Aperture 50 is configured to receive one or more tools (not shown) to facilitate insertion and removal of set screw within threadedaperture 28. - With additional reference to
FIGS. 3 and 4 , radial telescope bushing 44 generally includes apost 52 and a curved free-state bushing portion 54 extending aboutpost 52. In the embodiment shown, free-state bushing portion 54 is elastically deformable in a radial direction extending frompost 52. In the exemplary embodiment,post 52 andcurved bushing portion 54 are formed integrally as a single component.Post 52 is inserted into setscrew aperture 50 to maintain radial positioning relative to setscrew 42 andlower jacket 26. Curved bushingportion 54 provides a biasing effect againstupper jacket 24 as it is driven against the curvedupper jacket 24 by setscrew 42. - In the embodiment shown, free-
state bushing portion 54 appears as a hat brim shape aboutpost 52. As shown inFIG. 4 ,curved bushing portion 54 is in the form of an arc betweenopposite outboard edges 56 of radial telescope bushing 44. Curved bushingportion 54 has a free-state radius of curvature that is generally less than a radius of curvature of telescopingupper jacket 24. This creates a free-state region of contact that is located at theopposite outboard edges 56 of radial telescope bushing 44. As setscrew 42 is driven into threadedaperture 28 oflower jacket 26 in a direction shown byarrow 58,radial telescope bushing 44 is elastically forced to generally conform toouter surface 60 ofupper jacket 24, which provides a spring loaded pre-load toupper jacket 24 aboutoutboard edges 56 that de-lashes the interface betweenjackets telescope bushing assembly 40 will have clearance between bushingportion 54 andupper jacket 24. When assembled, radial telescope bushing 44 is disposed radially outward ofupper jacket 24 and radially inward oflower jacket 26. -
Radial telescope bushing 44 may be included with various coatings to provide desired wear and lubricity characteristics. Further, material thickness, diameter, post size, and other features of radial telescope bushing 44 may be tuned to vary the bushing's effective spring rate such that bushing 44 may be used an a multitude of applications. - Further,
assembly 10 may include two sets oftelescope bushing assemblies 40 to bias thetelescoping jacket 24 against the inner diameter of fixedjacket 26. This enables the radial points of de-lashing contact to be equally space, resulting in the assembly being insensitive to component variation and enablingassembly 10 to be disassembled and reassembled while still yielding the same performance. Additionally, when loaded against telescopingjacket 24, the geometry of busing 44 is self-stabilizing during assembly, resulting in radial self-alignment during torque procedure. Accordingly,bushing assembly 40 provides a geometry that, when loaded against mating components, acts like a spring. This spring effect serves as a means to compensate for wear of telescoping interfaces to maintain a de-lashed joint. Further,bushing assembly 40 provides a wear surface for telescopingjacket 24 to ride against during telescope function, provides a surface and positioning geometry for setscrew 42 to interface that complements and facilitates the spring effect, and provides a self-stabilizing geometry that rotationally orients components relative to the axis of telescope movement during assembly. - Described herein are systems and methods that facilitate de-lashing a telescope joint. The systems include a telescope bushing assembly having a set screw and a radial telescope bushing. The radial telescope bushing includes a curved surface that provides a pre-load against a telescoping jacket of the system. As such, previous injection processes are eliminated in exchange for a fastening process that drives the set screw into the radial telescope bushing to de-lash the telescope jacket to the fixed jacket. Further, stroke load can be monitored in concert with the fastening process to provide feedback, and the bushing assembly provides improved and repeatable performance in static stiffness and natural frequency due to guaranteed points of contact between the bushing and the telescope jacket.
- While the invention has been described in detail in connection with only a limited number of embodiments, it should be readily understood that the invention is not limited to such disclosed embodiments. Rather, the invention can be modified to incorporate any number of variations, alterations, substitutions or equivalent arrangements not heretofore described, but which are commensurate with the spirit and scope of the invention. Additionally, while various embodiments of the invention have been described, it is to be understood that aspects of the invention may include only some of the described embodiments. Accordingly, the invention is not to be seen as limited by the foregoing description.
Claims (16)
1. A bushing assembly for a steering column having a fixed jacket and a telescope jacket, the bushing assembly comprising:
a set screw configured for insertion into the fixed jacket; and
a radial telescope bushing co-acting with the set screw and having a post and a curved bushing portion configured to pre-load the radial telescope bushing against the telescope jacket to provide a lash-free interface between the fixed jacket and the telescope jacket.
2. The bushing assembly of claim 1 , wherein the set screw includes an aperture formed therein.
3. The bushing assembly of claim 2 , wherein at least a portion of the post is inserted into the aperture.
4. The bushing assembly of claim 1 , wherein the set screw includes a threaded outer surface.
5. The busing assembly of claim 1 , wherein the curved bushing portion has a radius of curvature that is less than a radius of curvature of the telescope jacket.
6. A steering column assembly comprising:
a steering column shaft;
a fixed jacket having a jacket aperture formed therein;
a telescope jacket configured for telescopic movement relative to the fixed jacket; and
a bushing assembly comprising:
a set screw disposed in the jacket aperture; and
a radial telescope bushing co-acting with the set screw and having a post and a curved bushing portion configured to pre-load the radial telescope bushing against the telescope jacket to provide a lash-free interface between the fixed jacket and the telescope jacket.
7. The steering column assembly of claim 6 , wherein the set screw includes an aperture formed therein.
8. The steering column assembly of claim 7 , wherein at least a portion of the post is inserted into the aperture.
9. The steering column assembly of claim 6 , wherein the set screw includes a threaded outer surface.
10. The steering column assembly of claim 9 , wherein the jacket aperture is threaded to receive the set screw threaded outer surface.
11. The steering column assembly of claim 6 , wherein the curved bushing portion has a radius of curvature that is less than a radius of curvature of the telescope jacket.
12. The steering column assembly of claim 6 , wherein the curved bushing portion is disposed between the telescope jacket and the fixed jacket.
13. The steering column assembly of claim 6 , wherein the radial telescope bushing is disposed radially outward of an outer surface of the telescope jacket.
14. The steering column assembly of claim 6 , further comprising a telescope actuator assembly configured to telescopically move the telescope jacket relative to the fixed jacket.
15. The steering column assembly of claim 6 , wherein the post and the curved bushing portion are formed integrally as a single component to form the radial telescope bushing.
16. A method of fabricating a bushing assembly for a steering column having a fixed jacket and a telescope jacket, the method comprising:
providing a set screw configured for insertion into the fixed jacket; and
forming a radial telescope bushing having a post extending within the set screw and a curved bushing portion configured to pre-load the radial telescope bushing against the telescope jacket to provide a lash-free interface between the fixed jacket and the telescope jacket.
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US14/633,714 US9522694B2 (en) | 2015-02-27 | 2015-02-27 | Radial telescope bushing for steering column |
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US14/633,714 US9522694B2 (en) | 2015-02-27 | 2015-02-27 | Radial telescope bushing for steering column |
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US20160252133A1 true US20160252133A1 (en) | 2016-09-01 |
US9522694B2 US9522694B2 (en) | 2016-12-20 |
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US14/633,714 Active US9522694B2 (en) | 2015-02-27 | 2015-02-27 | Radial telescope bushing for steering column |
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WO2018127590A1 (en) | 2017-01-09 | 2018-07-12 | Thyssenkrupp Presta Ag | Motor-adjustable steering column for a motor vehicle |
US20190061804A1 (en) * | 2017-08-22 | 2019-02-28 | Steering Solutions Ip Holding Corporation | De-lash assembly for manually adjustable steering column |
US10279834B2 (en) * | 2016-09-29 | 2019-05-07 | Steering Solutions Ip Holding Corporation | Rake adjustment mechanism for steering column |
US10343706B2 (en) | 2015-06-11 | 2019-07-09 | Steering Solutions Ip Holding Corporation | Retractable steering column system, vehicle having the same, and method |
US10351160B2 (en) | 2016-11-30 | 2019-07-16 | Steering Solutions Ip Holding Corporation | Steering column assembly having a sensor assembly |
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US10370022B2 (en) | 2017-02-13 | 2019-08-06 | Steering Solutions Ip Holding Corporation | Steering column assembly for autonomous vehicle |
US10385930B2 (en) | 2017-02-21 | 2019-08-20 | Steering Solutions Ip Holding Corporation | Ball coupling assembly for steering column assembly |
US10436299B2 (en) | 2015-06-25 | 2019-10-08 | Steering Solutions Ip Holding Corporation | Stationary steering wheel assembly and method |
US10457313B2 (en) | 2016-06-28 | 2019-10-29 | Steering Solutions Ip Holding Corporation | ADAS wheel locking device |
US10464592B2 (en) | 2017-10-30 | 2019-11-05 | Steering Solutions Ip Holding Corporation | Steering column motion control assembly |
US10464590B2 (en) | 2016-10-07 | 2019-11-05 | Steering Solutions Ip Holding Corporation | Steering column energy absorbing system |
US10526003B2 (en) | 2017-09-28 | 2020-01-07 | Steering Solutions Ip Holding Corporation | Shroud guidance mechanism for steering column |
US10569798B2 (en) * | 2015-10-01 | 2020-02-25 | Nsk Americas, Inc. | Linkage for steering wheel electric motor tilt assembly |
US10577009B2 (en) | 2015-06-16 | 2020-03-03 | Steering Solutions Ip Holding Corporation | Retractable steering column assembly and method |
US20200101999A1 (en) * | 2018-09-28 | 2020-04-02 | Thyssenkrupp Presta Ag | Adjustable steering column assembly |
US10906576B2 (en) | 2018-11-21 | 2021-02-02 | Steering Solutions Ip Holding Corporation | Anti-rotation feature for steering column telescope drive assembly |
US10974756B2 (en) | 2018-07-31 | 2021-04-13 | Steering Solutions Ip Holding Corporation | Clutch device latching system and method |
US11414121B2 (en) * | 2018-08-14 | 2022-08-16 | Thyssenkrupp Presta Ag | Steering column for a motor vehicle |
CN115023385A (en) * | 2020-01-29 | 2022-09-06 | 蒂森克虏伯普利斯坦股份公司 | Steering column for a motor vehicle |
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